Type-writing machine



(No Model. f I

05W. WALKER.

TY PE WRITING MACHINE.

No. 524,864. Patented Aug. 14, 1894..

Mine 85 e S; I71 vent o r: f. 490444. 4M 44; www

5 Sheets-Sheet 1.

(No Model.) 5 Sheets-Sheet 2.

"G. W. WALKER,v

TYPE WRITING MACHINE. i No. 524,364. Patented Alig. 14, 1894.

JO 53 g 54% J2 g 4 j Wit 7186688! I M M4 J kow fi ma NoR'ms "was coPHOTO-LIYHQ, wasumaron. a. o.

(No Model.) Y 5 Sheets- -Sheet 3'.

O. W. WALKER.

TYPE WRITING MACHINE. No. 524,364. Patented Aug. 14, 1894.

WLiuess e 3 .Qo4a4 mow (No Model.) v 5 Sheefis-Sheet 4. O. W. WALKER.

TYPE WRITING MAGHINB. No. 524,364. Patented Aug. 14, 1894,

T Vzizesses: I z 7' MM. MZ/QZZZiZ? .fl/QWMf W m (No Model.) ssheetssheet 5.

I O. W. WALKER.

TYPE WRITING MACHINE. I No. 524,364. Patented Aug. 14, 1894.

Fly. m

pl/31711655681 JnVa-nzbr; f. a I /Zmzmwf NITED STATES PATENT OFFICE.

CHARLES W. WALKER, OF STRANG, NEBRASKA.

TYPE-WRITING MACHINE...

SPECIFICATION forming part of Letters Patent No. 524,364, dated August 14, 1 894. Application filed April 18, 1893. Serial No. 470.363. (Nomodel.)

To all whom it may concern:

Be it known that I, CHARLES W. WALKER, a citizen of the United States,residing at Strang, in the county of Fillmore and State of Nebraska,have invented certain new and use ful Improvements in Type-WritingMachines, of which the following is a specification.

This invention relates to that class of typewriting machines in which apad is employed and consists in the details shown in the accompanyingdrawings, in Which- Figure 1, is an isometrical view of my improvedtypewriter. Fig. 2, is an end elevation of the upper portion thereof inits normal position. Fig. 3, is a similar View in .which the platen istilted to expose the printing. Fig. 4, isa plan view of the escapement.Figs. 5, and 6 are elevations of the type bar. Figs. 7 and 8 areisometrical representations of the parts composing the type bar.- Fig.9, is an isometricalcview of the upper portion of the typewriter showingthe support for the carriage, and a paper" guide secured thereto. Fig.10, is an isometrical view of the inner face of one of the sides showingthe spring arrangement for moving the carriage during the process ofprinting. Fig. 11, is an isometrical View of the mechanism for tiltingthe platen to expose the writing. Fig. 12, is an isometricalrepresentation of the manner of constructing the key levers, showingtheir connection with the keys, also showing the spacing device. Fig.13, is a horizontal lengthwise section, through the key levers, upon anenlarged scale.

The main frame of my improved typewriter consists of sides, 1, rear end2, and front end 3, properly secured together. The front upper faces ofthe sides are provided with steps ascending from the front, and keyguides, 4, are located upon these steps and secured thereto.

of construction l'indrical rod 9, and forward of this rod is secured apaper shield 10, having its frontedge curved upward, and in front of theshield is secured a rollerll.

The paper carriage consists of the lengthwise bars 12, and 13, and endbars 14, provided with suitable bearings for the platen 15. The end ofthe platen at the left hand of the machine is provided with a ratchetwheel 16, and to its-opposite end is secured a knob 17, by which it maybe rotated. From the under side of the rear lengthwise bar 12, issecured a section of a tube 18, having its lower portion cut away, thecut away portion being less than half of the tube. Thistube is slippedover the rod 9, thereby forming a connection sequently with the mainframe of the machine. The front lengthwise bar 13, rests I upon theroller 11, secured to the upper face of the circular support 7. Theupper face of the front lengthwise bar is marked with divisions, forminga scale and from the center of its length rises a stationary pointer 19.To the underside of the end bars 14. are secured bearings 20, which formsupports for a paper feed roller 21, located in rear of the platen andin contact therewith, and a paper guide 22, has a connection with thispaperroller, in order between the face of the paper feed roller and theplaten.

From the upper face and left hand of the paper carriage, rise arms 23,connected by a that the paper may properly enter tube 24. This tube isprovided with Vertical lengthwise slots 25. A dog 26, is located in thevertical slots and a spring 27, is located in the tube pressing againstthe dog. A plunger 28, is located in the tube surrounding the plunger bymeans of which the dog may be moved in the lengthwise direction of thetube.

The lower end of the dog engages the toothed ratchet wheel 16. Bypushing in the plunger the dog will engage the toothed ratchet movingthe platen a double space, that is, the distance of two teeth, and whena single space is required, a pivoted latch 29, is turned up, and aroundthe shank of the plunger, limiting the extent of the movement of theplun- I ger, consequently the extent of the movement of the platen.Fromthe rear lengthwise bar 12, of the paper carriage rise right anglearms ending upward and rearward and connected by a transverse rod 31.

To a suitable support is connected alever, consisting of arms 32 and 33.The longer arm engaging the transverse rod on the front side thereof. Tothe shorter arm is connected a vertical rod 34, having its lower endconnected to a bar 35, pivoted to the rear end of the main frame. Alever 36 has a pivotal connection with one side of the main frame and toits front end is pivoted a key 37, its short end resting under the end38, of the bar 35. A spring 39, is connected to this bar 35 and to themain frame. By this arrangement we have aconnection between the key 37and the paper carriage. By pressing upon the key 37, the bar 35,will bemoved upon its pivot, drawing down upon the rod 34,'against the actionof the spring 39. This drawing down movement will carry the lever fromthe position shown at Fig. 2, to that shown at Fig. 3, causing the papercarriage to tilt upon its connection with the rod 9, exposing to viewthe printed matter as shown at Fig. 3, and upon releasing the pressureupon the key 37, the carriage will return to its normal position. Thiskey is located near the key board and consequently within easy reach ofthe operator.

To the circular support 7, in front of the paper carriage I have secureda pointer, consisting of its support 40, and the pointer proper 41. Thispointer lies in contact with the front edge of the front lengthwise barof the paper carriage and when the paper carriage is tilted to theposition shown at Fig. 3, this pointer will,by reason of its upper endbeing weighted, movein contact with the paper as shown in said figure,pointing out the exact location of the point at which the type print,and by its use the location of any letter may be easily ascertained, andupon lowering the paper carriage it will assume its normal position asshown at Fig. 1.

By employing the fixed paper guide 10, the paper will readily feed intothe proper position to be printed upon and the stationary pointer 19,will prevent the paper from falling forward.

From the upper face of the metallic support 6, rises an arm 42,supporting a roller 43, at its upper end, over which passes a cord 44,connected at one end to the paper carriage and at its other end to awheel 45, secured to the inner face of one of the sides of the mainframe as shown at Fig. 10. To the face of this wheel is secured a camshaped wheel 46, to the greatest diameter of which is secured a cord 47,and to this cord is secured a spring 48, havingits opposite end securedto the main frame. By means of this arrangement I exert a uniformpulling strain upon the carriage, that is, as the spring loses its forcethe leverage or its purchase over the wheel 45, is increased.

To the rear of the lengthwise bar of the paper carriage is pivoted atoothed rack 49,

by the arms 50, and at Figs. 2, 3 and 4, I have shown the escapementmechanism, which consists of a stationary dog 51, and a movable dog 52,said dogs having a sliding engagement, and when the toothed rack is inits normal position its teeth will lie in engagement with the movabledog, preventing the movement of the paper carriage and during theprinting process this toothed rack bar is raised and lowered to be inengagement with either of the dogs, and when it is in engagement withthe stationary dog, the movable dog is drawn in the lengthwise directionof the toothed rack by the spring 53, keeping it in line with thestationary dog so that when the ratchet bar descends its teeth will comein contact with the movable dog,

' and the spring force exerted upon the paper carriage being greaterthan the spring force exerted upon the movable dog, the paper carriagewill be moved the extent of the movement of the movable dog, thisoperation is repeated at each impression of the type or operation of thespace bar.

It will be noticed at Figs. 2 and 3, that when the paper carriage istilted upon its pivotal connection with its support, the ratchet barwill be moved rearward and in order to prevent the disengagement of thetoothed rack with the dogs the rear edge of the ratchet bar will come incontact with the uprising bar 54, which has a connection with thedogs,and as the toothed rack movesrearward it will carry the dogs with it andupon the return of the carriage to its normal position, a spring 55,secured to the stationary portion of the machine and exerting its forceagainst the uprising bar 54, will force the dogs forward, always holdingthe dogs in engagement with the toothed rack during the horizontalmovement of the ratchet bar.

The escapement is effected by a rod 56, moving upward against the underface of the toothed rack causing the toothed rack to move from itsengagement with the movable dog, to the stationary dog as shown at Fig.2. The mechanism for imparting this vertical movement to the rack willnow be explained.

IIO

At Fig. 12, I have shown the construction of a universal bar, whichconsists of a platform 57, pivoted tothe rear end of the sides of themain frame and extending forward covering the space occupied by thekeys. A spring 58, has a connection with the upper face of thisuniversal bar and to the under face of the upper portion of the mainframe so that an upward influence is exerted upon the bar. Underneaththis universal bar is pivoted an inclined rocking bar 59, by pivots 60,having an engagement with the ends of the main frame. A screw 61, havingan engagement with the tilting bar rests against the under face of theuniversal bar, by means of which the proper adjustment may be given tothe toothed rack in order to allow the proper escapement. The rod 56,which operates upon the ratchet bar, has a connection with this tiltingbar and a spring 62, sur-' machine and its lower end having a pivotalconnection with a bar 64, the other end of which has a pivotalconnection with the front end of the main frame.

It will be seen that by depressing the space bar, the universal bar willbe correspondingly depressed which will rock the tilting bar upon itspivot, causing the rod 56, to move in an upward vertical direction,causing the toothed rack to move from its engagement with the movabledog to the stationary dog and upon the release of the space key theparts will assume the position shown at Fig. 12, allowing the toothedrack to assume its normal position shown at Fig. 2.

At Figs. 12 and 13 I have shown my im-v proved construction of keylever, which consistsin locating a series of levers upon the same axialcenter, that is the first lever 65, may be a tube or solid lever andupon this first lever is located a tube 66, forming the second, and uponthe second tube is located a third tube 67, and so on until the requirednumber has been attained. In this instance I have located eightas shownat Fig. 13. From one end of each of these levers is permanently securedan arm 68, and upon the .other end is set screwed a collar, from whichprojects an arm 69. The arms 69,ha ve a pivotal connection with the keys70, as shown at Fig. 12, and the solid arms have a connection with thetype bars as shown at Figs. 5 and 6. By this arrangement I am able tolocate a series of key leverswithin a verysmall compass and each onehaving an oscillatory movement, giving the least possible friction. Thestems of the keys rest in contact with the upper face of the universalbar 57, so that when any one key is depressed the universal bar will becorrespondingly depressed which will operate the escape mechanism asbefore described in relation to the space bar.

To the periphery of the circular support 7, is secured a series ofradial type bar supporting blocks 71, by means of a screw 72, so

that .any one block may be removed without disturbing the others. Mytype bar consists of two bars 73, and 74, of sheet metal connectedtogether at their upper faces for a portion of their length and havingone end pivoted to the blocks 71, so the block WlllllQ between the arms,and to the free ends of these bars is pivoted a type carrying arm 75,hav-- ing the type located upon its free end 76.

. The lower type bar 74, is provided with an extension 77, to which ispivoted a link 78,

connecting it with the arm 68, extending from the key levers. Thecircular support 7, is 6 ing the keys the type bar will be moved fromits position shown at Fig. 6, to that shown at Fig. 5, leaving itsimprint upon the paper and upon releasing the keys it will drop to itsnormal position. It will be seen by this construction of type bar, thearms being slotted and pivoted to their support, that the support formsa guide for the type bar in its movement and prevents lateral movementof the bar and will consequently present the type at the requiredposition at each depression of the key.

When it is desired to set the carriage the operator will lift upon thetoothed rack, releasing it in its engagement with the dogs, when thecarriage may be moved in either direction transversely of the machine.

I claim as my invention- 1. In a type writing machine, a paper carriagehaving a vertical oscillatory movement, arms extending upward andrearward from the center, upon which the carriage is pivoted, and at theend thereof a rod connecting the arms, a pivoted hook engaging the rodand a key lever for operating the hook for imparting the verticaloscillatory movement to the carriage.

2. In a type writing machine, the combination of a paper carriage, atoothed rack having a pivotal connection therewith and capable ofa-horizontal bodily movement, a pivoted dog and a stationary-dog and amovable base supporting said dogs to move in unison with the horizontalmovement of the toothed rack.

3. In a typewriting machine, the combinationof a paper carriage, atoothed rack, an escapement device, a universal bar capable ofiavertical oscillatory movement, a tilting bar located beneath theuniversal bar and operated thereby, a connection between the tilting barand toothed rack, and keys for operating the universal bar.

4. In a type writing machine, a type bar consisting of two bars having apivotal connection with a stationary support and a pivotal connectionwith the type carrying arm,

one end of each of the bars lying on each side of the stationarysupport, forming a guide for the bar.

CHARLES W. WALKER. Witnesses:

A. O. BEHEL, E. BEHEL.

